Climate averages 1991–2020
Białystok weather
in December.
A cold month with moderate precipitation: the 10th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Białystok: daytime highs average 0.9°C and nights cool to about -3.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 45 mm of precipitation on roughly 10 days, which makes December a month with moderate precipitation (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 39 min on an average December day.
The nearest other city in this atlas is Hrodna (75 km away). In December its highs average 0.5°C, about as warm as Białystok, with 44 mm of precipitation.
Among the 60 cities listed in Poland, Białystok ranks 60th of 60 for the warmest December highs and joint 37th of 60 for the driest December (precipitation, lowest first). The mean December high of those 60 cities is 2.4°C; Białystok is 1.6°C cooler than that mean.
From December to January, average highs fall by 1.5°C to -0.6°C, and monthly precipitation falls from 45 mm to 39 mm.
The annual picture
December in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Białystok climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.6°C-5.1°C | -5.1°C | 39 | 10.4 | 8.28 h |
| February | 0.7°C-4.6°C | -4.6°C | 38 | 9.5 | 9.810 h |
| March | 5.5°C-2.0°C | -2.0°C | 41 | 10.4 | 11.812 h |
| April | 12.5°C3.0°C | 3.0°C | 46 | 9.9 | 13.914 h |
| May | 18.0°C8.4°C | 8.4°C | 67 | 12.0 | 15.816 h |
| June | 21.3°C12.2°C | 12.2°C | 70 | 12.6 | 16.917 h |
| July | 23.3°C14.6°C | 14.6°C | 84 | 13.2 | 16.416 h |
| August | 22.8°C14.1°C | 14.1°C | 68 | 10.4 | 14.815 h |
| September | 17.4°C10.0°C | 10.0°C | 58 | 9.6 | 12.713 h |
| October | 11.1°C5.2°C | 5.2°C | 48 | 9.9 | 10.611 h |
| November | 5.1°C1.1°C | 1.1°C | 41 | 9.7 | 8.79 h |
| December, selected | 0.9°C-3.0°C | -3.0°C | 45 | 10.1 | 7.78 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Hrodna in DecemberBelarus · 75 kmHigh 0.5°C · Low -3.3°C · 44 mm precipitation
- Brest in DecemberBelarus · 120 kmHigh 0.9°C · Low -3.2°C · 40 mm precipitation
- Siedlce in DecemberPoland · 123 kmHigh 1.3°C · Low -2.6°C · 41 mm precipitation
- Lida in DecemberBelarus · 164 kmHigh 0.0°C · Low -3.8°C · 46 mm precipitation
- Wawer in DecemberPoland · 170 kmHigh 2.0°C · Low -2.1°C · 43 mm precipitation
- Praga Południe in DecemberPoland · 171 kmHigh 2.1°C · Low -2.0°C · 42 mm rain
- Białołeka in DecemberPoland · 173 kmHigh 2.1°C · Low -2.1°C · 42 mm rain
- Warsaw in DecemberPoland · 176 kmHigh 2.0°C · Low -2.1°C · 42 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Białystok) is explained once on the Białystok year overview and on the Sources, method and limits page.